Take a potion or scroll. Fireball it once. (Yes I did say fireball it.)
Now you would think you have just wasted a perfectly good item because it
is now just debris, but you're wrong. Pick it up and use it. Believe it or
not, you should now have infinite uses of whatever it used to be.
Amazingly it works. Debris are your friends. The real problem is
organizing them all.
